Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true and destructiveHint=false, so safety is covered; the description adds that paging must be driven with pagination.next_page and that results contain personal data requiring minimal use. It does not mention rate limits or result ordering, but for a read-only list tool the disclosed traits are solid.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with the core purpose, then fields, then the alternative and endpoint – no filler sentences. The privacy note and endpoint citation are slightly tangential but short enough not to bloat the definition.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With no output schema, the description compensates by enumerating the returned fields (name, email, phone, identification, address, birth date, record number, active flag), and pagination is covered by the schema. Only minor gaps remain, such as result ordering and total-count behavior.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100% and both parameters (page, per_page) are documented there with defaults and limits. The description's 'page by page' only implies the pagination parameters without adding format detail, so the schema does the heavy lifting and baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('List the business's clients (customers) page by page') and enumerates the fields returned, so the agent knows both scope and payload. It explicitly distinguishes itself from the sibling agendapro_search_clients and cites the underlying endpoint GET /v3/clients.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives an explicit routing rule: use this tool to enumerate the client base, but use agendapro_search_clients to find one person. It also adds a handling constraint ('only use it for the task at hand') that tells the agent how to treat the returned personal data.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.